Hopefuly its only a glitch but Turbos dont usually go and all the oil use does sound like a bit of engine wear oil blowing past the pistons .Get it on the laptop get somebody different to do the diagnosis .Your normal Spanner Jockie is a bit like your Doctor makes his money from return visits not cures .
I've never worked on cars johnny I'm only talkin from me own experience rebuilding diesel engines but as I said to Ken before .....I've never seen a turbo go where the underlying problem wasn't low oil pressure ....in all cases after being stripped down ....the big ends wer damaged ...
The only other problem that i was informed could cause one to go is back pressure from a blockage in the exhaust causing overheating ..but usually you get fair warning in that case ...a blocked air filter or restricted air inlet will just cause poor performance and black smoke but modern cars are wide to that wit computers an sensors
It could have been a temporary oil problem which has since been rectified but permanent damage may have been done ....but turbos don't go on a Toyota unless there was one of the oil issues I stated above ....a simple oil pressure test at the turbo and then at the engine mite reveal more ...
Because the turbo is at the end of the oil line and the turbo bearing/s are operating at extreme temperatures and velocity ....it doesn't take much for them to fail ...the oil is also coooling the turbo bearing/s... failure of a turbo is caused by low oil , old oil or wrong oil or just an engine that has too many miles ......
There is no point in adding bottles of shit to the diesel .. . The fact that ken is still having problems
Suggests he didn't get away with the initial
Oil deficiency/problem and possibly low oil pressure is a permanent condition in which case his turbo will go again ....
If the oil issue was bad enough it could have worn big ends which leads to permanent low oil pressure....which as you rightly pointed out also causes blue smoke coming from the combustion Chambers because of oil ring/ piston cylinder wear damage an dpf clogging up continuously......
Havin said all that I'm way out of touch and not up to date ......I've a phobia to spanners an dirt now for a number of yers
